Compilare: main.cpp: In function 'int main()': main.cpp:18:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= k; i++) ~~^~~~ main.cpp:25:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= l; i++) ~~^~~~ main.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i <= n; i++) ~~^~~~ main.cpp:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < n; i++) ~~^~~ main.cpp:51:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = i+1; k <= i+c[i].f && k <= n; k++) ^ main.cpp:51:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = i+1; k <= i+c[i].f && k <= n; k++) ~~^~~~ main.cpp:63:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = i+c[i].f+1; k <= i+2*c[i].s && k <= n; k++) ^ main.cpp:63:62: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = i+c[i].f+1; k <= i+2*c[i].s && k <= n; k++) ~~^~~~ main.cpp:78:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = i+1; k <= i+c[i].f; k++) ^ main.cpp:94:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = i+1; k <= i+2*c[i].s && k <= n; k++) ^ main.cpp:94:60: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = i+1; k <= i+2*c[i].s && k <= n; k++) ~~^~~~