#include "stdio.h"

#include "stdlib.h"

int * c, n;

int lowbit(int x) {

return x & -x;

}

void add(int x, int k) {

for (; x <= n; x += lowbit(x))

c[x - 1] += k; //c从下标0开始使用

}

int sum(int x) {

int result = 0;

for (; x > 0; x -= lowbit(x))

result += c[x - 1]; //c从下标0开始使用

return result;

}

int range_sum(int x, int y) {

return sum(y) - sum(x - 1);

}

int main() {

scanf("%d", &n);

c = (int *)malloc(n * sizeof(int)); //c从下标0开始使用

for (int i = 0; i < n; i++) c[i] = 0;

int w;

scanf("%d", &w);

char cmd;

int a, b;

for (int i = 0; i < w; i++) {

scanf(" %c %d %d", &cmd, &a, &b);

if (cmd == 'x') {

add(a, b);

}

else {

printf("%d\n", range_sum(a, b));

}

}

free(c);

return 0;

}